Cleaned up /lib/, removed trailing white space everywhere.

lib/theme-and-appearance.zsh

@@ -1,35 +1,23 @@
-# ls colors
-autoload colors; colors;
-[[ -z "$LSCOLORS" ]] && export LSCOLORS="Gxfxcxdxbxegedabagacad"
+# Load and run colors.
+autoload -U colors
+colors -i
 
-# Enable ls colors
-if [ "$DISABLE_COLOR" != "true" ]
-then
-  # Find the option for using colors in ls, depending on the version: Linux or BSD
-  ls --color -d . &>/dev/null 2>&1 && alias ls='ls --color=tty' || alias ls='ls -G'
-fi
-
-#setopt no_beep
-setopt auto_cd
-setopt multios
-setopt cdablevarS
-
-if [[ x$WINDOW != x ]]
-then
-    SCREEN_NO="%B$WINDOW%b "
+# Set the GNU Screen window number.
+if [[ -n "$WINDOW" ]]; then
+  SCREEN_NO="%B$WINDOW%b "
 else
-    SCREEN_NO=""
+  SCREEN_NO=""
 fi
 
-# Apply theming defaults
+# Set the default prompt theme.
 PS1="%n@%m:%~%# "
 
-# git theming default: Variables for theming the git info prompt
-ZSH_THEME_GIT_PROMPT_PREFIX="git:("         # Prefix at the very beginning of the prompt, before the branch name
-ZSH_THEME_GIT_PROMPT_SUFFIX=")"             # At the very end of the prompt
-ZSH_THEME_GIT_PROMPT_DIRTY="*"              # Text to display if the branch is dirty
-ZSH_THEME_GIT_PROMPT_CLEAN=""               # Text to display if the branch is clean
+# Set the default Git prompt theme.
+ZSH_THEME_GIT_PROMPT_PREFIX="git:("    # Prefix before the branch name.
+ZSH_THEME_GIT_PROMPT_SUFFIX=")"        # Suffix after the branch name.
+ZSH_THEME_GIT_PROMPT_DIRTY="*"         # Indicator to display if the branch is dirty.
+ZSH_THEME_GIT_PROMPT_CLEAN=""          # Indicator to display if the branch is clean.
 
-# Setup the prompt with pretty colors
+# Enable parameter, arithmentic expansion and command substitution in prompt.
 setopt prompt_subst